Further to my post from yesterday, I stumbled across an interesting article from the 1818 edition of the Philosophical Transactions of the Royal Society of London, volume 108, pages 110 to 117.
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A bloody green
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Further to my post from yesterday, I stumbled across an interesting article from the 1818 edition of the Philosophical Transactions of the Royal Society of London, volume 108, pages 110 to 117.